Press



w. KLOCK'E,

7 PRESS. APPLICATION FILED MAR. 30, 1921. 1,4 35,532 Patented Nov. 14, 1922'; 4 2 SHEETS-SHEET W. KLOCKE.

' PREss; APPLICATgON FILED MAR. 30, 1921.

Patented Nov. 14, 1922 2 \SHEEIS-SHEEI 2'.

Patented Nov. l4, W22.

iliiliii arr WILLIAM: KLOGKE, OF NEW YORK, N. Y., ASSIGNOR TO BLISS COMTAJST Y, OF BROOKLYN, NEW YORK, A CORPORATION OF WEST VIRGINIA.

PRESS.

Application filed March 30,1921. Serial No. 457,016.

T 0 all whom it may concern Be it known that I, WILLIAM KLooKn, a citizen of the United States of America, residing in WVoodhaven, in the borough and county of Queens, city and State of New York, have invented certain new and useful Improvements in Presses, of which the fol lowing is a specification.

This invention relates to drawing presses, and aims to provide improvements therein.

The present invention provides a press having a simple, strong, efficient driving mechanism, comprising toggles, for a blank holder or die-carrying slide. T

The invention further provides a press having a plurality or driving connections for the blank holder or die-carrying slide, comprising rocking parts arranged on, axes parallel with the side frames of the press, usually in the direction of the shortest dimension of the press. 7 7

The invention further provides a driving connection or connections for a blank holder or die-carrying slide, wherein the driving force is derived from a crank or other eccentric part turning around an axis at right angles to the rocking parts comprising parts of the toggle connections, without involving the use of universal joints, the joints in the connections having simple turning movements around single axes, as, for example,

around shafts orcpivot pins.

The invention further prov des a mechanism, having the characteristics above referred to, wherelnthe stra ns lmparted by the blank holder or die-carrying slide actuating connectlons are transmitted to the frame in a. direction. to be resisted by the ordinary tensile members or reinforcing parts of'the press frame. Strains crosswise of the frames are avoided, and the strains of the slide operating mechanism are in the direc tion of the height of the press, this being in the same direction asthe strains arising from the action. of the blank holder and punch upon the water. I

. The invention, provides a slide actuating mechanism especially applicable to presses having a wide span between the side frames. The invention further provides a press wherein sharp angles are avoided in the working parts under stress, and wherein the strains are well balanced and sustained in the press.

The invention further provides a novel combination, and sub-combinations of parts of a press hereinafter more fully set forth.

An embodiment of the invention is illusa trated in the accompanying drawing, where- 1n: f Figure 1 is a view, in front elevation, of

a press embody ng the mvention;

Flgure 2 1s a v1ew,'1n side elevation, and

partly in section, of the construction shown 1 slide 10, and 12 designates a punch slide adapted to work either through the bed 11' or slide 10, according to the design of the press, here shown as working through the slide'lO.

Numeral 15 designatesthe frame of the press, which conveniently may comprise the.

base '16, the side frames 'or' parts 17-, reinforced by the tension rods 18 and ayoke or cross-piece 19. i

The punch' lide is preferably driven by a crank-shaft 20, running longitudinally of the press, and supported in hearings in the side frames" 17. In large presses, for

heavy duty, the crank-shaft 20 preferably extends through the side frames, and has driving parts or gears 21 thereon, at each end, at'the outer sideof the side frames '17 The blank holder or die-carrying slide is preferably driven from the same crank-shaft "20, which drives the punch 12, and this is conveniently effected through crank pins 23 projecting from the outer sides of the driving parts or'gears 21.

The actuating mechanism 25 for the blank holder or die-carrying slide '10 preferably comprises an actuating slide '30, convenient- 1y mounted upon gibs, or the like, 31, upon the outer face of the side frames 17, which actuating slide is conveniently connected to the crank pin 23 on the driving part (fr gear 21, by means of a link 33 connected at one. end to said pin 23,-. and at its other end to 'a pin 34: onthe slide 30, said pins 23 and 30 being'paralleL and providing a simple turning or pivotal movement of the link 33 on the said pins.

The actuat ngmechanism furthercom part 3? conveniently comprises a shaft 39 running crosswise of the frame, usually in the CllI'GCilOILO'f the lesser dimension of the press. Conveniently, the rocking part 37 is fixed to the shaft 39, so that the parts 37 and turn together.

The toggle 35 is preferably actuated by a second toggle 45, the toggle 45 being connected, by means of a pivotal connection 46, at one end, to a crank arm, or the like 47, connected to one leg of the toggle 35, either directly, or indirectly, through the shaft 39, and the other end of said toggle 45 is conveniently connected to a trunnion or pin 48 on the side frame 17, the trunnion 48 and the toggle 45 beingduplicated corresponding to the toggles 35.

The toggle 45 is actuated by the actuating slide 30, being conveniently connected thereto by a link 53, which link is connected to the toggle, conveniently directly thereto by means of the pin 54, which connects the legs of the toggle 45. The link 53 also has a pivotal connection to the slide 30, as indi cated at 5.5.

The arrangement of the link 53, slide 30,

and toggles 45 and 35, is such that, when the toggles 45 and 25 are extended, the link 53 is very nearly at right angles to the toggle 45, and with its pivotal connection 55 moving very nearly parallel to the said toggle 45. The toggles, in their extended position, are in a position where the mechanical advantage thereof, in transmitting the force applied thereto, is greatest, and the link 53 is also in position to apply force in a direct line to the toggle 45. In this position of the toggles 35 and 45, corresponding to the blank-holding position of the blankholder slide, the parts are in the best positions for transmitting and sustaining the great forces usuallyinvolved, and moreover the angles of the connections are sutficiently obtuse that no considerable part of the driving force is resolved into pull on a hearing or shaft where a turning force is required. Moreover, the pin 23, at this time, is preferably moving in that; part of its circle which is generally at right angles to the link 33, andis hence working to its best mechanical advantage on the slide 30,

-By reason of the pivot 55 of. the link 53 working generally inlinewith the extended toggle 45, and also by reason 'of the pin. at the same time working; generally at right angles to the link 33,:tl1ereisproduced in.

the blank-holder slide 10, in its blank-holding position, an effective dwell of some thing more than 90 of the rotation of the crank-shaft 20.

The axes of the shaft 39 and pivots 46, 48, 54 and 55 are parallel, and, hence, the parts all turn in the same or parallel planes. It will thus be seen that none of the joints of the link 33, or of the toggles 35 and 45 and the link 53 have turning movement in more than one plane, all of the joints having a simple turning movement around one axis, and thereby avoiding the use of universal joints, notwithstanding the arrangement of the axis of the drive shaft 20 at right angles to the axes of the toggles and 45 and the link 53. i

Moreover, the arrangement of the parts of the blank holder slide actuating mechanism 25 is such that the strains between the ends of the toggles 35 and 45, and between the ends of the link 33, are in the direction of the tension rods 18 of the press, that is, the strains are, in the same direction as the strains between the slide 10 and bed 11.

The blank-holder or die-carrying slide mechanism 25 is also preferably duplicated at each side or end of the press, as indicated in Figure 1, that is, the driving connections of the actuating mechanism 25 are prefer-- ably symmetrically. disposed with relation to the midplane of the press, and the -1nidplane 71 at right. angles to the midplane 70.

The inventive ideas herein set forth may receive other embodiments than that herein specifically illustrated and described.

What is claimed is I 1. A press comprising side frames, a punch driving shaft, a blank-holder or diecarrying slide, and means for operating the same, said means comprising a rock arm adjacent a side frame turning around an axis crossing that of said punch driving shaft, a toggle connected to said arm, an actuating slide, and a link connecting said toggle and actuating slide, said link which is connected to'said actuating slide being arranged to extend substantially perpendicular to said toggle when the latter is extended.

2. A press comprising side frames, a punch driving shaft, a blank-holder ordiecarrying slide, and means for operating the same, said means comprising a rock arm adjacent a side frame turning around an axis crossing that of said punch driving shaft, a toggle connected to said arm, an actuating slide, and a link connecting said toggle and actuating slide, said link which is connected to said actuating slide being arranged to extend substantially, perpendicular to said toggle when the latteris ex tended, said punch driving shaft extendlng beyond'said side frames, and aconnection between said punch driving 'shaft liei yond said side frames and said actuating slide.

3. A press COII1pI1S1I1g,S1(18 frames, a

punch driving shaft, a blank-holder or die-,

carrying slide, and means for operating the same, said means comprising a pair of rockarms adjacent a side frame turning around an axis crossing that of said punch driving shaft, a toggle connected to each of said arms, an actuating slide, and a link connecting each of said toggles and said actuating slide, said links which are connected to said actuating slide being arranged to extend substantially perpendicular to said toggles when the latter are extended.

4:. A press comprising side frames, a punch driving shaft extending beyond said side frames, a blank-holder or die-carrying slide, and means for operating said slide, said means comprising an actuating slide on each side frame, driving connections between the projecting ends of said punch driving shaft and each of said actuating slides, a pair of rock-arms at each side of the press, turning around an axis crossing that of said punch driving shaft, a toggle connected to each arm, a link connecting each toggle to the actuatingslide on the corresponding side of the press, said links be- ,ing connected to said actuating slide and tosaid arm on axes parallel to said rock-arms,

said links which are connected to said actu ating slides being. arranged to extend substantially perpendicular to. said toggles when the latter are extended.

5. A press comprising side frames, a'

punch driving shaft extending beyond said side frames, a blank-holder or die-carrying slide, and means for operating said slide, said means comprising an actuating slide on each side frame, cranks at the projecting ends of said shaft, -and a link connecting each of said cranks and actuating slides,

a pair of rock-arms at each side of the press,

axes parallel to said rock-arms, said links which are connected to said actuatlng slides being arranged to extend substantially perpendicular to said toggles when the latter are extended.

signed my name. a WILLIAM KLOCKE.

v In Witness whereof, I have hereunto 

